Count uint8

Count the number of bytes equal to 127 in a binary stream as fast as possible.

Input: 250 000 000 uint8 values in binary on STDIN.

Output: The count of elements equal to 127, printed as a decimal string.

Restrictions:30s512Mb 1 Score Packages

Feel free to create an issue if you need an extra library from the standard Ubuntu repository.

Name	Version	Description
libc6-dev	2.39-0ubuntu8.7	GNU C Library: Development Libraries and Header Files Contains the symlinks, headers, and object files needed to compile and link programs which use the standard C library.
libclang-common-14-dev	1:14.0.6-19build4	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-15-dev	1:15.0.7-14build3	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-16-dev	1:16.0.6-23ubuntu4	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-17-dev	1:17.0.6-9ubuntu1	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-18-dev	1:18.1.3-1ubuntu1	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-19-dev	1:19.1.1-1ubuntu1~24.04.2	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-20-dev	1:20.1.2-0ubuntu1~24.04.2	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libcrypt-dev	1:4.4.36-4build1	libcrypt development files This package contains the files needed for developing applications that use libcrypt.
libgcc-10-dev	10.5.0-4ubuntu2.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-11-dev	11.5.0-1ubuntu1~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-12-dev	12.4.0-2ubuntu1~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-13-dev	13.3.0-6ubuntu2~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-14-dev	14.2.0-4ubuntu2~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libobjc-13-dev	13.3.0-6ubuntu2~24.04.1	Runtime library for GNU Objective-C applications (development files) This package contains the headers and static library files needed to build GNU ObjC applications.
libssl-dev	3.0.13-0ubuntu3.9	Secure Sockets Layer toolkit - development files This package is part of the OpenSSL project's implementation of the SSL and TLS cryptographic protocols for secure communication over the Internet. . It contains development libraries, header files, and manpages for libssl and libcrypto.
libstdc++-10-dev	10.5.0-4ubuntu2.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-11-dev	11.5.0-1ubuntu1~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-12-dev	12.4.0-2ubuntu1~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-13-dev	13.3.0-6ubuntu2~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-14-dev	14.2.0-4ubuntu2~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libtbb-dev	2021.11.0-2ubuntu2	parallelism library for C++ - development files TBB is a library that helps you leverage multi-core processor performance without having to be a threading expert. It represents a higher-level, task-based parallelism that abstracts platform details and threading mechanism for performance and scalability. . (Note: if you are a user of the i386 architecture, i.e., 32-bit Intel or compatible hardware, this package only supports Pentium4-compatible and higher processors.) . This package includes the TBB development files.

Back to listJan 1, 2026 00:18

Josu San MartinScore: 4,418Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Dec 31, 2025 14:21	4,389	35,714,491	12,038,000	2,006,000	2,449,408
2	Dec 31, 2025 14:21	4,390	29,081,117	12,041,000	2,006,000	2,449,408
3	Jan 1, 2026 00:18	4,391	39,527,570	12,044,000	2,007,000	2,281,472
4	Dec 31, 2025 14:21	4,392	26,300,296	12,046,000	2,007,000	2,449,408
5	Dec 31, 2025 14:23	4,395	39,071,671	12,056,000	2,009,000	2,445,312
6	Dec 31, 2025 14:21	4,399	36,926,452	12,066,000	2,011,000	2,281,472
7	Dec 31, 2025 14:23	4,399	39,492,111	12,067,000	2,011,000	2,281,472
8	Jan 1, 2026 00:18	4,409	35,087,336	12,094,000	2,015,000	2,281,472
9	Dec 31, 2025 14:21	4,411	28,842,720	12,099,000	2,016,000	2,281,472
10	Dec 31, 2025 14:23	4,412	31,036,017	12,101,000	2,016,000	2,281,472
11	Dec 31, 2025 14:23	4,413	29,934,394	12,106,000	2,017,000	2,277,376
12	Dec 31, 2025 14:21	4,414	33,509,756	12,108,000	2,018,000	2,281,472
13	Dec 31, 2025 14:23	4,415	26,221,166	12,111,000	2,018,000	2,281,472
14	Dec 31, 2025 14:21	4,416	32,930,590	12,113,000	2,018,000	2,449,408
15	Dec 31, 2025 14:23	4,417	35,039,180	12,114,000	2,019,000	2,281,472
16	Jan 1, 2026 00:18	4,418	41,785,634	12,118,000	2,019,000	2,449,408
17	Dec 31, 2025 14:21	4,419	30,713,389	12,120,000	2,020,000	2,449,408
18	Dec 31, 2025 14:23	4,420	33,904,573	12,125,000	2,020,000	2,449,408
19	Jan 1, 2026 00:18	4,423	33,765,514	12,131,000	2,021,000	2,449,408
20	Jan 1, 2026 00:18	4,424	38,551,140	12,134,000	2,022,000	2,445,312
21	Dec 31, 2025 14:23	4,426	27,527,074	12,140,000	2,023,000	2,453,504
22	Jan 1, 2026 00:18	4,427	27,921,236	12,142,000	2,023,000	2,281,472
23	Dec 31, 2025 14:23	4,428	35,866,824	12,145,000	2,024,000	2,281,472
24	Jan 1, 2026 00:18	4,430	35,329,335	12,151,000	2,025,000	2,281,472
25	Dec 31, 2025 14:23	4,432	34,900,273	12,157,000	2,026,000	2,281,472
26	Dec 31, 2025 14:21	4,433	29,240,445	12,158,000	2,026,000	2,535,424
27	Jan 1, 2026 00:18	4,435	30,507,587	12,164,000	2,027,000	2,445,312
28	Dec 31, 2025 14:23	4,443	40,125,469	12,188,000	2,031,000	2,449,408
29	Dec 31, 2025 14:23	4,451	37,320,704	12,209,000	2,034,000	2,441,216
30	Jan 1, 2026 00:18	4,452	31,605,153	12,211,000	2,035,000	2,281,472

Model	Intel(R) Xeon(R) CPU E3-1271 v3 @ 3.60GHz
Cores	1